xworm | b09cb3790f8d27dedc636d2bb8532a94fddaf88a9428e17be30b31a3b742b2f2

General

Target

CrackLauncher.exe
Size

76KB
MD5

eaf8bead81874b59ed1e17761dcda97a
SHA1

c449a6daae2900b66d8490b29793974ccc42adaa
SHA256

b09cb3790f8d27dedc636d2bb8532a94fddaf88a9428e17be30b31a3b742b2f2
SHA512

cdeda053b0fb2e526c943acb95696b5c9e577ea50a7871a5aa30830dc9fd25ede7d826139096c9669a193bbd3dfa0e5b72857c5857f0c1725d91a19184f60be9
SSDEEP

1536:UQFZgCR8ZPMhcNi1ptY8353R6L5ph64yJ3We9Gq:bLRbPR6L5ph6JJ3We99

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

ideas-equation.gl.at.ply.gg:13038

Mutex

Sdytd3eRdcISYTKJ

Attributes

Install_directory
%AppData%
install_file
dawas.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x00030000000227b4-26.dat	family_xworm
behavioral2/memory/1780-34-0x0000000000110000-0x0000000000122000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
xworm

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
4708	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-250031470-1197856012-2659781506-1000\Control Panel\International\Geo\Nation	CrackLauncher.exe

Executes dropped EXE 1 IoCs

pid	Process
1780	NurikCrack1.16.5.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-250031470-1197856012-2659781506-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NurikCrack1.16.5 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\NurikCrack1.16.5.exe"	CrackLauncher.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
36	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4708	powershell.exe
4708	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4708	powershell.exe
Token: SeDebugPrivilege	1780	NurikCrack1.16.5.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1400 wrote to memory of 4468	1400	CrackLauncher.exe	90
PID 1400 wrote to memory of 4468	1400	CrackLauncher.exe	90
PID 1400 wrote to memory of 4708	1400	CrackLauncher.exe	91
PID 1400 wrote to memory of 4708	1400	CrackLauncher.exe	91
PID 1400 wrote to memory of 1780	1400	CrackLauncher.exe	96
PID 1400 wrote to memory of 1780	1400	CrackLauncher.exe	96

C:\Users\Admin\AppData\Local\Temp\CrackLauncher.exe
"C:\Users\Admin\AppData\Local\Temp\CrackLauncher.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1400
- C:\Users\Admin\AppData\Local\Temp\CrackLauncher.exe
  "C:\Users\Admin\AppData\Local\Temp\CrackLauncher.exe"
  2⤵
  PID:4468
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\NurikCrack1.16.5.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4708
- C:\Users\Admin\AppData\Local\Temp\NurikCrack1.16.5.exe
  "C:\Users\Admin\AppData\Local\Temp\NurikCrack1.16.5.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1780

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\CrackLauncher.exe.log

Filesize
42B

MD5
84cfdb4b995b1dbf543b26b86c863adc

SHA1
d2f47764908bf30036cf8248b9ff5541e2711fa2

SHA256
d8988d672d6915b46946b28c06ad8066c50041f6152a91d37ffa5cf129cc146b

SHA512
485f0ed45e13f00a93762cbf15b4b8f996553baa021152fae5aba051e3736bcd3ca8f4328f0e6d9e3e1f910c96c4a9ae055331123ee08e3c2ce3a99ac2e177ce

Download Submit
C:\Users\Admin\AppData\Local\Temp\NurikCrack1.16.5.exe

Filesize
44KB

MD5
b738126406c02253ee779ac205d9174e

SHA1
70dc9f77f20777184df051201ab4eb6ae23fdd58

SHA256
b3d74f6ae903c8e60a8bc30315e3cbb5734577c3297ee3df2cd619b16d5884e3

SHA512
c26dac50200e66a9810817ac6a6b56c9a82b5ddb58a018681d7ff486ec0dccb5867349915d583ed9725a793fd707e5e1f5a2b01a2f3d9909e11207747373bfa9

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jvubo455.cxc.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1400-0-0x00007FFFC0F03000-0x00007FFFC0F05000-memory.dmp

Filesize
8KB

Download
memory/1400-1-0x00000000007A0000-0x00000000007BA000-memory.dmp

Filesize
104KB

Download
memory/1400-2-0x00007FFFC0F00000-0x00007FFFC19C1000-memory.dmp

Filesize
10.8MB

Download
memory/1400-35-0x00007FFFC0F00000-0x00007FFFC19C1000-memory.dmp

Filesize
10.8MB

Download
memory/1780-34-0x0000000000110000-0x0000000000122000-memory.dmp

Filesize
72KB

Download
memory/4468-18-0x00007FFFC0F00000-0x00007FFFC19C1000-memory.dmp

Filesize
10.8MB

Download
memory/4468-3-0x00007FFFC0F00000-0x00007FFFC19C1000-memory.dmp

Filesize
10.8MB

Download
memory/4708-16-0x0000025577410000-0x0000025577432000-memory.dmp

Filesize
136KB

Download
memory/4708-21-0x00007FFFC0F00000-0x00007FFFC19C1000-memory.dmp

Filesize
10.8MB

Download
memory/4708-6-0x00007FFFC0F00000-0x00007FFFC19C1000-memory.dmp

Filesize
10.8MB

Download
memory/4708-5-0x00007FFFC0F00000-0x00007FFFC19C1000-memory.dmp

Filesize
10.8MB

Download
memory/4708-4-0x00007FFFC0F00000-0x00007FFFC19C1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads